Main differences between RELEASE_X and RELEASE_X_Y branches

[ptitoliv]

Hi everybody,

I am writing this mail in this mailing list because I would like to have 
more informations about the main differences between a RELEASE branch 
and the STABLE branch. More precisely, I would want to now what is the 
interest to use a RELEASE in stead of STABLE branch.

Thank you for your ansewers.

Best Regards,
Ptitoliv